File upload basics

- [Instructor] When we look at our registration form,…we see that it already contains a file upload field.…Now one could assume that this is sufficient…to send a file to a server.…Unfortunately, it's not that easy.…Let's fill out the form and inspect the payloads…to understand the problems…so I'm just putting in some bogus data.…Some password, and I will also…choose a file…to be uploaded and I'm opening from development tools…I select preserve log so that the redirect won't clear…the history and I click submit.…

Now when I look into this registration request,…we see on the bottom of the headers the request headers.…If we scroll down in it,…we see that there is also a section for form data.…And there we see that we are transmitting a few fields.…If we look at the source, we see that the data…is encoded similar to a theory stream…if we do a get request.…

We also see in the payload that while the file name…of the uploaded image was sent,…the binary data is missing.…This is because, to upload a file,…we need to change the encoding of the form…